The key to this fly is that the body has no thread base. This allows it to appear transparent, with only wire and tubing holding it on the hook shank.
Many ask how it stays in place. The answer is the two wraps of wire at the bend of the hook. Secured with one drop of Lactate super glue, it will hold for numerous battles. The head of the midge can be joined in numerous ways: with only thread for a slim and sleek look; with a black tungsten bead for depth control; or, my personal favorite, with white poly yarn to represent a gill tuft sticking out in front of the thread or bead.
